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NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV

NXAirS description

10. Technical data

10.1 Panel

Electrical data (maximum values)

Rated voltage

12kV

Rated power-frequency withstand voltage

42kV

Rated lightning impulse withstand voltage

75kV

Rated frequency

50Hz

Rated short-circuit breaking current

25kA, 31.5kA, 40kA

Rated short-circuit making current

63kA, 80kA, 100kA

Rated peak withstand current

63kA, 80kA, 100kA

Rated short-time withstand current and time

25kA/4s, 31.5kA/4s, 40kA/4s

Rated current of the busbar

（

max.

）

4000A

Rated current of the feeder

（

max.

）

4000A

The highest ambient temperature

40°C

Width

Circuit breaker panel
l

≤

31.5kA l

≤

3150A

800

≤

40kA l

≤

2500A

800

= 40kA l

≥

3150kA

1000

Disconnecting panel
l

≤

31.5kA l

≤

3150A

800

≤

40kA l

≤

2500A

800

≤

40kA l

≥

3150A

Panel

1000

Substation transformer

1000

metering Panel

800

Height

≤

31.5kA l

≤

2500A

2200

= 31.5kA l

= 3150A

2400

= 40kA

2300

Depth

= 31.5kA l

= 3150A l

= 3150A

1500

≤

31.5kA l

≤

2500A l

≤

2500A

1350

≤

31.5kA l

≤

3150A l

≥

3150A

1500

= 40kA

1500

Height

Minimum dimension

2800

Width(operation area)

Minimum dimension for 800 width panel

1350

Minimum dimension for 1000 width panel

1550

Standard

IP4X

Option (only for the panel without natural ventilation)

IP51

IEC/EN standard

GB standard

Panel

60694

GB/T11022

62271-200

GB3906

Switchgear

Circuit breaker

62271-100

GB1984

Disconnector and earthling switch

62271-102

GB1985

Switch-disconnector

60265-1

GB3804

Insulation test

60071

GB311.1

Protection degree

60529

GB4208

Transformer

Current transformer

60044-1

GB1208

Potential transformer

60044-2

GB1207

Dimensions per panel in mm

Dimensions of the power
distribution room in mm

Protection degree

Basic regulation and standard
Standards for indoor used circuit-
breaker module panel NXAirS

Summary of Contents for NXAirS

Page 1: ...www siemens com cn Type NXAirS Withdrawable Metal Enclosed Medium Voltage Switchgear up to 12kV Air insulated Answers for infrastructure and cities ...

Page 2: ...mpartment 8 7 2 Circuit Breaker module SION 9 7 3 Busbar compartment 9 7 4 Cable connection compartment 9 7 5 Low voltage compartment 9 7 6 Additional compartment to the busbar compartment optional 10 8 Interlocks 10 9 Accessories 11 10 Technical data 11 10 1 Panel 12 10 2 SION 12 10 3 Climate and ambient conditions 13 11 Service Information 13 11 1 Maintenance 13 11 2 Panel connection 13 11 3 Spa...

Page 3: ...3 7 Open the Circuit Breaker 21 13 8 Charging the spring manually 22 13 9 Feeder earthing 23 13 10 Disconnect the earthing of feeder 24 13 11 Cable channel 25 13 12 Inserting SION module 26 13 13 Operation procedure of NXAirS service truck 29 13 14 Operation of shutters 30 13 15 Operation of motor driven 31 14 Service 31 14 1 Maintenance of Switch panel 32 14 2 Maintenance of SION 33 15 Troublesho...

Page 4: ...ts electric indicators and shockproof metal enclosure of living parts if all operations are according to these regulations Caution The precondition for normally and safely operating of the panel is as the following Observe the instructions of operation and installation Operated by qualified professional person Correct conveyance and professional installation of the switchgear panel Professional as...

Page 5: ...rom the front of the panel The operation handle holes and control units are clearly allocated beside the mechanical indicators There are mechanical indicators of switch on mimic diagram Manual Motor driven cassettee and earthing switch Flexibility Panel can be wall mounted or not Cable connection can be done from both front and rear of the panel Middle place withdrawable panel Connection of all no...

Page 6: ...ting module panel is an additional module to the basic module It s used to carry electrical power It can not switch on electrical power The withdrawable part in the disconnecting module NXAirS is therefore protected by a padlock against arbitrary operation standard construction Busbar Disconnecting module panel Low voltage plug connector with mechanical interlock between module and panel Mechanism...

Page 7: ... is powder coated with epoxy resin Individual self supporting modular compartments in solid wall design Compartments are bloted together The sheet between compartments can withstand pressure of arcing Each compartment relieves pressure upwards 1 Low voltage plug connector 2 Drive and interlock unit of the circuit Breaker 3 Vacuum interrupter 4 Fix and move contact 5 The operation mechanism of circ...

Page 8: ...se or tripping coil Operation cycle counter Indicate device of switch status Electrical tripping prevention Voltage sensitivity resistance module when the auxiliary voltage 60V Electromagnetic interlock The secondary release Low voltage release CT drive release Circuit breaker Circuit breaker can be operated by button or electronic remote controller The energy for the open close open procedure qui...

Page 9: ...hing switch Cable type CT at the bottom of the connection compartment Natural ventilation current above 2500A Heating device Motor driven earthing switch 7 5 Low voltage compartment Completely separated from the other compartments and removable For installation of protection control measuring and metering equipment Plug is adapted to connection of conductor and control cable 705 mm is the standard...

Page 10: ...reaker Withdrawable module at disconnected or service position Open the Circuit breaker None Close the earthing switch Withdrawable module at disconnected position of interlock Close the busbar earthing switch No power of main busbar Open the front door Withdrawable module at disconnected position Mechanical interlocks operation Additional preconditions Move the withdrawable module manually extern...

Page 11: ... 3150A Panel 1000 Substation transformer 1000 metering Panel 800 Height lk 31 5kA ln 2500A 2200 lk 31 5kA ln 3150A 2400 lk 40kA 2300 Depth lk 31 5kA ln 3150A lb 3150A 1500 lk 31 5kA ln 2500A lb 2500A 1350 lk 31 5kA ln 3150A lb 3150A 1500 lk 40kA 1500 Height Minimum dimension 2800 Width operation area Minimum dimension for 800 width panel 1350 Minimum dimension for 1000 width panel 1550 Standard IP...

Page 12: ... Figure 3 Nameplate 10 3 Climate and ambient conditions The switchgear may be used subject to possible additional measures under the following climate classes and ambient conditions Climate classes according to IEC 60721 3 3 3K3 3K5 3KX Ambient conditions Natural foreign materials Chemically active pollutants Small animals For detailed information please refer to catalogue 7 1 2 3 4 5 6 Figure 4 D...

Page 13: ... and components Switching compartment and cable connection compartment adapt side board design double metal Partition between compartments The cable connection compartment and switching compartment keep separated when compartment is taken away For the standard scheme there is no metal Partition between the compartments of the busbar area When change compartment please consult our company Separated...

Page 14: ...on device Capacitive voltage detector for busbar compartment and cable connection compartment Door of the high voltage compartment Locking device of the high voltage compartment Opening for spring charge Door knob for opening the high voltage door Actuating openings for the circuit breaker Actuating openings for the earthing switch Close open indication of earthing switch Sliding cover of the actu...

Page 15: ...ls are fittings Drawing 6 Operating handle for push in and pull out circuit breaker Drawing 7 Operating pole for circuit breaker used for manual open close from outside of the cabinet Drawing 8 Operating handle for earthing switch of feeders Drawing 9 Manual operating crank for energy storage spring when circuit breaker is at working position ...

Page 16: ...Close HV door Preconditions without SION module or Insert SION module according to descriptions on Page 25 and 26 Insert secondary plug Pull the handle downwards and the door closes Turn the key clockwise by 90 and take out the key 13 4 Push SION module to service position Preconditions Place the module into the panel Insert the secondary plug HV door is closed Circuit breaker is in open position ...

Page 17: ...on ensure to perform necessary external unlock at first Open the padlock option Push upwards the sliding baffle plate Insert the handle of SION module to the operating shaft and turn it clockwise to the limit place Attention Only when SION module is positioned in stable limit place all interlocks can be unlocked SION module must be moved to its limit place Take out the operating handle Sliding baf...

Page 18: ... of SION module to the operating shaft and turn it clockwise to the limit place Take out the operating handle Sliding baffle plate will close automatically Lock up the padlock option SION module is pushed to test position from the working position 13 5 Push SION module to test position Place the module into the panel Close the HV door The module is in working position Circuit breaker is in open po...

Page 19: ...o 1 from 0 Recorder of operating times adds 1 Circuit breaker is closed Take out the operating pole from the operating hole Electrical operation Removable part is in working position or test position Spring has enough energy HV door of switch cabinet is closed Preconditions for this operation Danger The unstable auxiliary voltage will impact the electrical interlock and mechanical interlock If the...

Page 20: ...electrical interlock and mechanical interlock If the interlock mechanism moves upwards manual operation is not allowed due to the electrical interlock Prior to manual operation ensure to perform necessary external unlock at first Drawing 13 Mechanical open of circuit breaker Operating procedure Close open indicator changes to 0 from 1 Circuit breaker is open Take out the operating pole from the op...

Page 21: ...conditions Drawing 15 Operating hole for manual energy storage of closing spring Danger The sudden race rotation of the handle will result in hurt to persons When use the handle for energy storage of spring pay attention to prevent the race rotation of the handle for when the control voltage is connected again motor rotation the return rotation of the handle will hurt persons During manual energy ...

Page 22: ...r The unstable auxiliary voltage will impact the electrical interlock and mechanical interlock If the interlock mechanism moves upwards manual operation is not allowed due to the electrical interlock Please pay attention to the five safety rules refer to Page 3 Normal description Prior to manual operation ensure to perform necessary external unlock at first Operating procedures Attention If the op...

Page 23: ... occurred Operating handle cannot be taken out in the middle position Operating handle cannot be taken out in the middle position Operating hole of earthing switch for feeders and the indicator for switch status are located at the lower left of handcart room door Operating hole is blocked by an additional sliding baffle plate Danger The unstable auxiliary voltage will impact the electrical interlo...

Page 24: ... operating handle anticlockwise by 90 Indicator for switch status displays 0 Earthing switch is open Take out the operating handle Sliding block of operating hole is closed Lock up the padlock option 13 11 Cable channel If the earthing condition is available close the earthing switch of feeder refer to Page 21 13 9 Earthing of feeders Open the HV door refer to Page 15 Open the HV door Take out SIO...

Page 25: ...take out the separator plate Please pay attention to the five safety rules refer to Page 3 Normal description Ensure there is no voltage At this time work planned in cable room can be accomplished 13 12 Inserting SION module Place SION module on maintenance truck then push the SION module into truck compartment refer to Page 25 13 13 Operating procedures of NXAir S service truck Code Mechanical co...

Page 26: ... panel 1 Place the service truck with VCB in front of the panel 2 Lock poles at both sides of service truck can match with location holes on guide rail through the lifting mechanism so that lock poles can be inserted into location holes smoothly 3 When service truck contacts with the panel completely interlock mechanism will move back automatically interlock shaft releases VCB Rotate handles of lo...

Page 27: ... into the panel and lock it 5 Support to service truck is adjusted downwards slightly through the lifting mechanism 6 Unlock the interlock of service truck move outward the handles of lock poles at the both sides then the service truck can be moved 7 Connect the secondary plug 8 Close the front door Operation of NXAirS ...

Page 28: ...hen service truck contacts with the panel completely interlock mechanism will move back automatically interlock shaft extends into the guide rail Rotate handles of lock poles at both sides inward and lock the service truck 5 Unlock the interlock handle of VCB push VCB into the rail of service truck and lock it in the interlock hole 6 Support to service truck is adjusted upwards slightly through th...

Page 29: ...e from test position to working position busbar movable shutter and feeder movable shutter will open automatically and keep in fully open position 2 When push SION module from working position to test position busbar movable shutter and feeder movable shutter will close automatically 3 Busbar movable shutter and feeder movable shutter can be operated independently i e open or close and without inf...

Page 30: ...n will be prohibited 13 15 2 Electrical operation of the removable part Operating procedure Preconditions for the operation Turn the change over switch to electrical operation Interlock conditions must be met Check whether change over switch is in electrical operation position or earthing switch is open Return from working position to test position press cart exit button in front of the panel Turn...

Page 31: ...ontact of main circuit a fix contact of earthing switch f and other parts with frication such as driving shaft of movable door mechanism s and travel rail d a and f shall adopt Dose Long term2 s and d shall adopt Isoflex Topas L32 Besides periodic maintenance if any fault occurred causes for faults and short circuits must be investigated immediately and damaged equipment must be replaced at once E...

Page 32: ...ch panel After check put the switch panel into operation again 14 2 Maintenance of SION Preconditions Switch off the power supply Circuit breaker is open Spring without energy We suggest performing visual check periodically To reach the optimum insulation effect insulation parts must be kept clean Insulation parts shall be cleaned by wet cloth and moderate detergent such as canned detergent If oth...

Page 33: ... open position Operating handle is inserted into the manual operating hole of feeder earthing switch The operating handle shall be inserted into correct hole Feeder earthing switch is not disconnected Disconnect the earthing switch for feeder One interlock on control panel is not unlocked Unlock the interlock on control panel Without control voltage Restore control voltage Door for HV compartment ...

Page 34: ...ocedures Without control voltage Restore the control voltage Feeder earthing switch cannot be opened electric failure Without control voltage Restore the control voltage Operating handle for removable part is still inserted in the hole Take out the operating handle for removable part One interlock on control panel is locked up Unlock this interlock according to normal operation procedures Earthing...

Page 35: ...sition switch is not switched over 3 Secondary wiring is incorrect communication wiring is reversed 2 Manual operation is available for the earthing switch but electric operation is impossible 1 The circuit breaker is not fully in the test position 2 Rear door of the cable compartment is not closed 3 Secondary wiring is incorrect Possible phenomena in the operation process If the problem still exi...

Page 36: ...ndustrial Area Jiangsu Suzhou 0512 6288 8191 ext 8316 0512 6661 4898 Guangzhou 8F 10F Teem Tower Teemall No 208 Tianhe Road Tianhe District Guangzhou City 020 3718 2888 020 3718 2107 Fuzhou 21F Zhongyin Building No 136 of Wusi Road Fuzhou City 0591 8750 0888 0591 8750 0333 Xiamen Room 2111 2112 21F Bank Center No 189 Xiahe Road Xiamen 0592 268 5508 0592 268 5505 Foshan Block K 19F Dongjian Buildin...

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